Membrane card



FIG. 1 is a front plan view of the membrane card according to the design.

FIG. 2 is a side view of the membrane card.

FIG. 3 is a top/bottom view of the membrane card; and,

FIG. 4 is a back plan view of the membrane card.

A membrane card for investigation of samples by electroblotting. 

CLAIM The ornamental design for a membrane card, as shown and described. 